complex

(noun) a conceptual whole made up of complicated and related parts. Synonyms: composite. Example: "The complex of shopping malls, houses, and roads created a new town."

(noun) a compound described in terms of the central atom to which other atoms are bound or coordinated. Synonyms: coordination compound.

(noun) (psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior.

(noun) a whole structure (as a building) made up of interconnected or related structures. Synonyms: building complex.

(adj) complicated in structure; consisting of interconnected parts. Synonyms: complex (vs. simple). Examples: "A complex set of variations based on a simple folk melody." "A complex mass of diverse laws and customs."